smoker
n
1 person who smokes tobacco regularly 吸烟的人
a heavy smoker, ie one who smokes very often 吸烟多的人
Non-smokers often disapprove of smokers. 不吸烟的人往往不赞成别人吸烟.
2 carriage on a train where smoking is allowed （火车上的）准予吸烟的车厢
Shall we sit in a smoker or a non-smoker? 我们坐吸烟车厢还是非吸烟车厢?